CN105241611A - Detector for internal leakage of regulating valve - Google Patents
Detector for internal leakage of regulating valve Download PDFInfo
- Publication number
- CN105241611A CN105241611A CN201510671488.5A CN201510671488A CN105241611A CN 105241611 A CN105241611 A CN 105241611A CN 201510671488 A CN201510671488 A CN 201510671488A CN 105241611 A CN105241611 A CN 105241611A
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- protecgulum
- cylinder body
- valve
- piston
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Abstract
The invention relates to the technical field of detection of internal leakage of a valve, and especially relates to a detector for internal leakage of a regulating valve. The detector comprises a cylinder body, a front cover, a rear cover, a piston rod, a piston, a front end cover, a front end cover diaphragm and a press mechanism. The front cover is arranged on the front end inside the cylinder body, and the rear cover is arranged on the rear end inside the cylinder body. The piston rod extends into the cylinder body from the rear end of the cylinder body. The piston divides the inside of the cylinder body into a chamber without a rod and a chamber with a rod. The front end cover is disposed on the front end face of the cylinder body. The front end cover diaphragm is pressed on the front end face of the front end cover through the press mechanism. The front cover is equipped with a suction hole that enables the chamber without a rod to be communicated with the outside of the cylinder body. A suction hole conduction structure is disposed in the suction hole. Leakage in a valve can be detected by tightly attaching the front end cover diaphragm to a flange surface of a valve that needs detection. The operating method and the working principle are both reasonable and simple. Moreover, the detector is small in overall size and light in weight, is convenient to carry, and exhibits high usage performance.
Description
Technical field
The present invention relates to valves leakage detection technique field, particularly relate in a kind of variable valve valve and let out detector.
Background technology
Current valve maintenance relates to the wide a kind of special service industry of scope.Variable valve, in maintenance process, needs the reliably sealing that trim carries out.In time carrying out visual examination to the valve rolled off the production line, can't find leakage situation in it, sometimes Party A requires first to roll off the production line to every deck valve door, then suppresses, and according to the seriousness of leakage situation in test, concludes.The serious valve of internal leakage carries out disassembling maintenance.The valve qualified for interior leakage can be disassembled.Because the weight of valve is very heavy, if carry out suppressing of platform platform to valve, not only time-consuming, and require great effort very much, also probably affect valve maintenance duration.
Summary of the invention
The technical problem to be solved in the present invention is: lacking that a kind of volume is little, lightweight to solve in prior art, letting out detector in the valve that is convenient for carrying, the invention provides in a kind of variable valve valve and let out detector.
The technical solution adopted for the present invention to solve the technical problems is: let out detector in a kind of variable valve valve, comprise cylinder body, protecgulum, bonnet, piston rod, piston, front end end cover, front end end cover diaphragm and hold-down mechanism, described protecgulum is arranged on the front end in cylinder body, the rear end of bonnet in cylinder body, piston rod stretches into cylinder interior from the rear end of cylinder body, piston bush is contained in the end that piston rod stretches into cylinder interior, the inside of cylinder body is divided into rodless cavity and rod chamber by described piston, front end end cover is arranged on the front end face of cylinder body, front end end cover diaphragm is pressed on the front end face of front end end cover by hold-down mechanism, described protecgulum offers the suction hole for being connected with cylinder body outside by rodless cavity, suction hole conducting structure is provided with in suction hole.Detector is let out in use in variable valve valve of the present invention, front end end cover diaphragm is close on the valve flange face of needs detection, suction hole is communicated with in valve body, drawing the gas in valve body by piston rod, after gas in valve body is all siphoned away, unclamping the anchorage force to letting out detector in variable valve valve, if valve body not in let out, then front end end cover diaphragm can be close on valve flange face, if let out in valve body, then front end end cover diaphragm can fall down from valve flange face.
For the ease of controlling air-breathing and exhaust, further, particularly, as preferably, described suction hole conducting structure comprises nonreturn valve core and spring blocks up, the outer ring of nonreturn valve core is column, front end face is tapered, the center, outer face of described protecgulum has the protecgulum external part to cylinder body extension, the inner face center of protecgulum has the protecgulum inserting end extended in cylinder body, the inner ring of described protecgulum external part is connected with the inner ring of protecgulum inserting end and is communicated with the suction hole described in rear formation, the joint of described protecgulum external part inner ring and protecgulum inserting end inner ring is equipped with the spacing flange collar of suction hole, match with the inner ring of protecgulum inserting end in the outer ring of nonreturn valve core, the pyramidal structure of the front end face of nonreturn valve core can partly be entrapped in the spacing flange collar of suction hole, the outer ring of described nonreturn valve core offers the spool deep-slotted chip breaker of indent, the outer ring of protecgulum inserting end offers air hole, described air hole is connected with spool deep-slotted chip breaker, spring block up be fixedly mounted on protecgulum inserting end rear end in, spring blocks up and be provided with stage clip between nonreturn valve core.
In order to improve sealing, and reduce the spacing flange collar corner of suction hole to the wearing and tearing of the taper of front end face, as preferably, the corner of the spacing flange collar inner ring of described suction hole is provided with the conical surface, and the described conical surface matches with the outer ring of the pyramidal structure of front end face.
In order to front end end cover diaphragm is pressed on front end end cover, and do not affect in variable valve valve and let out detector air-breathing, as preferably, described hold-down mechanism comprises gland and bolt, and described front end end cover, front end end cover diaphragm and gland are sleeved on protecgulum external part successively, and front end end cover is close on the front end face of cylinder body, bolt outer ring and protecgulum external part inner ring threaded engagement, gland is by bolt presses on front end end cover diaphragm, and described bolt end face center is provided with through hole, and through hole is connected with suction hole.
In order to limit the motion of protecgulum and piston, be convenient to air-breathing, as preferably, described rodless cavity inner ring is equipped with the spacing flange collar of cylinder body near protecgulum place, and the front end face restriction protecgulum of the spacing flange collar of cylinder body moves backward, and the rear end limited piston of the spacing flange collar of cylinder body travels forward.
In order to when air-breathing and exhaust, make gas have certain resiliency, as preferably, the outer ring of described piston offers the piston deep-slotted chip breaker of indent, and the outline of piston and the inner ring of rod chamber match.
In order to ensure the sealing of rod chamber and rodless cavity, as preferably, described piston rod has the spacing flange collar of piston rod near its inserting end, piston rod inserting end is set with diaphragm pressing plate, rubber blanket and piston successively, the spacing flange collar of piston rod is close to by diaphragm pressing plate, the inserting end of piston rod is also provided with the nut for clamping piston rubber blanket and diaphragm pressing plate, and the outer ring of rubber blanket and the inner ring of rod chamber are sealed and matched.
For the ease of exhaust, as preferably, described bonnet offers vent port.
In order to prevent leaking gas between protecgulum and cylinder body, as preferably, between described protecgulum and inboard wall of cylinder block, be provided with the O-ring seals being arranged on protecgulum outer ring.
Use for the ease of staff, as preferably, the end of the external part of described piston rod is provided with handle.
Due to repeatedly air-breathing and the exhaust of the larger needs of the valve body had, the gas in valve body all could be discharged, as preferably, described rodless cavity inwall is also provided with the one-way exhaust valve gas in rodless cavity can discharged.
The invention has the beneficial effects as follows, detector is let out in variable valve valve of the present invention, front end end cover diaphragm is close to need detect valve flange face on after, valve inner can be detected whether leak gas, method of operating, principle of work are all relatively rationally simple, and tester overall volume is little, lightweight, easy to carry, usability is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the front view letting out detector in the embodiment of the present invention one variable valve valve.
Fig. 2 is the A-A cut-open view of Fig. 1.
Fig. 3 is the inner structure schematic diagram letting out detector in the embodiment of the present invention one variable valve valve.
Fig. 4 is the nonreturn valve core perspective view of letting out detector in the embodiment of the present invention one variable valve valve.
Fig. 5 is the protecgulum perspective view of letting out detector in the embodiment of the present invention one variable valve valve.
Fig. 6 is the front view letting out detector in the embodiment of the present invention two variable valve valve.
Fig. 7 is the B-B cut-open view of Fig. 6.
Fig. 8 is the C place enlarged drawing in Fig. 7.
In figure: 1, cylinder body, 1-1, rodless cavity, 1-2, rod chamber, 2, protecgulum, 2-1, suction hole, 2-2, protecgulum external part, 2-3, protecgulum inserting end, 2-3-1, air hole, 2-4, the spacing flange collar of suction hole, 2-4-1, the conical surface, 3, bonnet, 3-1, vent port, 4, piston rod, 4-1, the spacing flange collar of piston rod, 5, piston, 5-1, piston deep-slotted chip breaker, 6, front end end cover, 7, front end end cover diaphragm, 8, nonreturn valve core, 8-1, spool deep-slotted chip breaker, 9, spring blocks up, 10, gland, 11, bolt, 11-1, through hole, 12, diaphragm pressing plate, 13, rubber blanket, 14, nut, 15, handle, 16, one-way exhaust valve, 17, O-ring seals.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment one
As Figure 1-5, embodiments of the invention one, detector is let out in a kind of variable valve valve, comprise cylinder body 1, protecgulum 2, bonnet 3, piston rod 4, piston 5, front end end cover 6, front end end cover diaphragm 7 and hold-down mechanism, protecgulum 2 is arranged on the front end in cylinder body 1, O-ring seals 17 is provided with between protecgulum 2 and cylinder body 1 inwall, O-ring seals 17 is arranged on protecgulum 2 outer ring, bonnet 3 is fixed by screws in the rear end in cylinder body 1, on bonnet 3, circumference is uniform offers vent port 3-1, preferably offer 3 vent port 3-1, piston rod 4 stretches into cylinder body 1 from the rear end of cylinder body 1 inner, piston 5 is sleeved on the end that piston rod 4 stretches into cylinder body 1 inside, the end of the external part of piston rod 4 is provided with handle 15, the outer ring of handle 15 is evenly equipped with the deep-slotted chip breaker of indent, be convenient to staff grip.
The inside of cylinder body 1 is divided into rodless cavity 1-1 and rod chamber 1-2 by piston 5, front end end cover 6 is arranged on the front end face of cylinder body 1, front end end cover diaphragm 7 is pressed on the front end face of front end end cover 6 by hold-down mechanism, the external diameter of front end end cover diaphragm 7 is greater than the external diameter of front end end cover 6, hold-down mechanism comprises gland 10 and bolt 11, front end end cover 6 is first sleeved on protecgulum external part 2-2, then front end end cover diaphragm 7 is sleeved on protecgulum external part 2-2 again, last gland 10 is sleeved on protecgulum external part 2-2 again, bolt 11 is inserted protecgulum external part 2-2 inner ring again, with protecgulum external part 2-2 inner ring threaded engagement, screwing bolts 11, thus make the outer end of bolt 11 compress gland 10, make front end end cover diaphragm 7 and front end end cover 6, the front end face of front end end cover 6 and cylinder body 1 is all close to, bolt 11 end face center is provided with through hole 11-1, through hole 11-1 is connected with suction hole 2-1.
Protecgulum 2 offering the suction hole 2-1 for being connected with cylinder body 1 outside by rodless cavity 1-1, in suction hole 2-1, being provided with suction hole conducting structure.
Suction hole conducting structure comprises nonreturn valve core 8 and spring stifled 9, the outer ring of nonreturn valve core 8 is column, front end face is tapered, the center, outer face of protecgulum 2 has the protecgulum external part 2-2 to cylinder body 1 extension, the inner face center of protecgulum 2 has the protecgulum inserting end 2-3 extended in cylinder body 1, the inner ring of protecgulum external part 2-2 is connected with the inner ring of protecgulum inserting end 2-3 and is communicated with and forms suction hole 2-1 afterwards, the joint of protecgulum external part 2-2 inner ring and protecgulum inserting end 2-3 inner ring is equipped with the spacing flange collar 2-4 of suction hole, match with the inner ring of protecgulum inserting end 2-3 in the outer ring of nonreturn valve core 8, the pyramidal structure of the front end face of nonreturn valve core 8 can partly be entrapped in the spacing flange collar 2-4 of suction hole, namely the internal diameter of the spacing flange collar 2-4 of suction hole is less than the external diameter of nonreturn valve core 8 cylindricality outer ring, the outer ring of nonreturn valve core 8 offers the spool deep-slotted chip breaker 8-1 of 3 uniform indents of circumference, the outer ring of protecgulum inserting end 2-3 offers 3 couples of air hole 2-3-1 that circumference is uniform, before and after often couple of air hole 2-3-1, distribution center on the same line, often couple of air hole 2-3-1 is connected with corresponding spool deep-slotted chip breaker 8-1, spring blocks up 9 and is fixedly mounted in the rear end of protecgulum inserting end 2-3, spring is stifled is provided with stage clip between 9 and nonreturn valve core 8.
Rodless cavity 1-1 inner ring is equipped with the spacing flange collar 1-3 of cylinder body near protecgulum 2 place, and the front end face restriction protecgulum 2 of the spacing flange collar 1-3 of cylinder body moves backward, and the rear end limited piston 5 of the spacing flange collar 1-3 of cylinder body travels forward.
The outer ring of piston 5 offers the piston deep-slotted chip breaker 5-1 of 6 ~ 8 indents, and piston deep-slotted chip breaker 5-1 circumference is distributed on the outer ring of piston 5, the outline of piston 5 or cylindrical, and the outline of piston 5 and the inner ring of rod chamber 1-2 match.Piston 5 adopts aluminum alloy material, piston rod 4 has the spacing flange collar 4-1 of piston rod near its inserting end, piston rod 4 inserting end is set with diaphragm pressing plate 12, rubber blanket 13 and piston 5 successively, the spacing flange collar 4-1 of piston rod is close to by diaphragm pressing plate 12, the inserting end of piston rod 4 is also provided with the nut 14 for clamping piston 5, rubber blanket 13 and diaphragm pressing plate 12, nut 14 is close to piston 5, and the outer ring of rubber blanket 13 and the inner ring of rod chamber 1-2 are sealed and matched.
Detector is let out before use in the variable valve valve of the present embodiment, the pyramidal structure of the front end face of nonreturn valve core 8 is that part is entrapped in the spacing flange collar 2-4 of suction hole, suction hole 2-1 is closed, front end end cover diaphragm 7 is close on the valve flange face of needs detection, suction hole 2-1 is communicated with in valve body, pull out piston rod 4, draw the gas in rodless cavity 1-1, because air hole 2-3-1 is communicated with spool deep-slotted chip breaker 8-1, nonreturn valve core 8 can move and be attached on spring stifled 9 by suction backward, make suction hole 2-1 open-minded, continue to pull piston rod 4 can draw gas in valve body, gas in rod chamber 1-2 is discharged in vent port 3-1.After gas in valve body is all siphoned away, piston rod 4 cannot pull, and unclamps the anchorage force to letting out detector in variable valve valve, if valve body not in let out, then front end end cover diaphragm can be close on valve flange face; If let out in valve body, then front end end cover diaphragm can fall down from valve flange face.
Embodiment two
As shown in figs 6-8, embodiments of the invention two, detector is let out in a kind of variable valve valve, with the difference of embodiment one be wherein, the place-exchange of piston 5 and rubber blanket 13, namely piston rod 4 inserting end is set with diaphragm pressing plate 12, piston 5 and rubber blanket 13 successively, the spacing flange collar 4-1 of piston rod is close to by diaphragm pressing plate 12, the inserting end of piston rod 4 is also provided with the nut 14 for clamping piston 5, rubber blanket 13 and diaphragm pressing plate 12, nut 14 is close to rubber blanket 13, and the outer ring of rubber blanket 13 and the inner ring of rod chamber 1-2 are sealed and matched.
In addition, in order to improve sealing, and reduce the spacing flange collar corner of suction hole to the wearing and tearing of the taper of front end face, the corner of the close nonreturn valve core 8 of spacing for suction hole flange collar 2-4 inner ring can be designed to conical surface 2-4-1, conical surface 2-4-1 matches with the outer ring of the pyramidal structure of front end face.Rodless cavity 1-1 inwall is also provided with the one-way exhaust valve 16 gas in rodless cavity 1-1 can discharged, this one-way exhaust valve 16 can only be used for the gas in rodless cavity 1-1 to discharge, cannot to air inlet in rodless cavity 1-1.Installation one-way exhaust valve 16 can discharge the gas in rodless cavity 1-1, realize repeatedly air-breathing, internal gas can not disposablely all siphon away by larger valve body, when piston rod 4 stretching range, can inwardly promote piston 5, gas in rodless cavity 1-1 is discharged from one-way exhaust valve 16, when piston rod 4 inwardly promotes, nonreturn valve core 8 also can travel forward thereupon and close suction hole 2-1, when piston 5 is pushed into the rear end face of the spacing flange collar 1-3 of cylinder body, the inhalation step before can repeating draws the gas in valve body.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (11)
1. let out detector in a variable valve valve, it is characterized in that: comprise cylinder body (1), protecgulum (2), bonnet (3), piston rod (4), piston (5), front end end cover (6), front end end cover diaphragm (7) and hold-down mechanism, described protecgulum (2) is arranged on the front end in cylinder body (1), the rear end of bonnet (3) in cylinder body (1), piston rod (4) stretches into cylinder body (1) from the rear end of cylinder body (1) inner, piston (5) is sleeved on piston rod (4) and stretches into the inner end of cylinder body (1), the inside of cylinder body (1) is divided into rodless cavity (1-1) and rod chamber (1-2) by described piston (5), front end end cover (6) is arranged on the front end face of cylinder body (1), front end end cover diaphragm (7) is pressed on by hold-down mechanism on the front end face of front end end cover (6),
Described protecgulum (2) offering the suction hole (2-1) for being connected with cylinder body (1) outside by rodless cavity (1-1), in suction hole (2-1), being provided with suction hole conducting structure.
2. let out detector in variable valve valve as claimed in claim 1, it is characterized in that: described suction hole conducting structure comprises nonreturn valve core (8) and spring stifled (9), the outer ring of nonreturn valve core (8) is column, front end face is tapered, the center, outer face of described protecgulum (2) has the protecgulum external part (2-2) to cylinder body (1) extension, the inner face center of protecgulum (2) has the protecgulum inserting end (2-3) extended in cylinder body (1), the inner ring of described protecgulum external part (2-2) is connected with the inner ring of protecgulum inserting end (2-3) and is communicated with the suction hole (2-1) described in rear formation,
The joint of described protecgulum external part (2-2) inner ring and protecgulum inserting end (2-3) inner ring is equipped with the spacing flange collar of suction hole (2-4), match with the inner ring of protecgulum inserting end (2-3) in the outer ring of nonreturn valve core (8), the pyramidal structure of the front end face of nonreturn valve core (8) can partly be entrapped in the spacing flange collar of suction hole (2-4), the outer ring of described nonreturn valve core (8) offers the spool deep-slotted chip breaker (8-1) of indent, the outer ring of protecgulum inserting end (2-3) offers air hole (2-3-1), described air hole (2-3-1) is connected with spool deep-slotted chip breaker (8-1),
Spring stifled (9) is fixedly mounted in the rear end of protecgulum inserting end (2-3), and spring is stifled is provided with stage clip between (9) and nonreturn valve core (8).
3. let out detector in variable valve valve as claimed in claim 2, it is characterized in that: the corner of the spacing flange collar of described suction hole (2-4) inner ring is provided with the conical surface (2-4-1), and the described conical surface (2-4-1) matches with the outer ring of the pyramidal structure of front end face.
4. let out detector in variable valve valve as claimed in claim 2 or claim 3, it is characterized in that: described hold-down mechanism comprises gland (10) and bolt (11), described front end end cover (6), front end end cover diaphragm (7) and gland (10) are sleeved on lid protecgulum external part (2-2) successively, front end end cover (6) is close on the front end face of cylinder body (1), bolt (11) outer ring and protecgulum external part (2-2) inner ring threaded engagement, gland (10) is pressed on front end end cover diaphragm (7) by bolt (11), described bolt (11) end face center is provided with through hole, through hole is connected with suction hole (2-1).
5. let out detector in variable valve valve as claimed in claim 1, it is characterized in that: described rodless cavity (1-1) inner ring is equipped with the spacing flange collar of cylinder body (1-3) near protecgulum (2) place, front end face restriction protecgulum (2) of the spacing flange collar of cylinder body (1-3) moves backward, and the rear end limited piston (5) of the spacing flange collar of cylinder body (1-3) travels forward.
6. let out detector in variable valve valve as claimed in claim 1, it is characterized in that: the outer ring of described piston (5) offers the piston deep-slotted chip breaker (5-1) of indent, the outline of piston (5) and the inner ring of rod chamber (1-2) match.
7. let out detector in variable valve valve as claimed in claim 6, it is characterized in that: described piston rod (4) has the spacing flange collar of piston rod (4-1) near its inserting end, piston rod (4) inserting end is set with diaphragm pressing plate (12) successively, rubber blanket (13) and piston (5), the spacing flange collar of piston rod (4-1) is close to by diaphragm pressing plate (12), the inserting end of piston rod (4) is also provided with for clamping piston (5), the nut (14) of rubber blanket (13) and diaphragm pressing plate (12), the outer ring of rubber blanket (13) and the inner ring of rod chamber (1-2) are sealed and matched.
8. let out detector in variable valve valve as claimed in claim 1, it is characterized in that: described bonnet (3) offers vent port (3-1).
9. let out detector in variable valve valve as claimed in claim 1, it is characterized in that: between described protecgulum (2) and cylinder body (1) inwall, be provided with the O-ring seals (17) being arranged on protecgulum (2) outer ring.
10. let out detector in variable valve valve as claimed in claim 1, it is characterized in that: the end of the protecgulum external part of described piston rod (4) is provided with handle (15).
Let out detector in 11. variable valve valves as claimed in claim 1, it is characterized in that: described rodless cavity (1-1) inwall is also provided with the vent valve (16) gas in rodless cavity (1-1) can discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671488.5A CN105241611B (en) | 2015-10-16 | 2015-10-16 | Detector is let out in regulating valve valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671488.5A CN105241611B (en) | 2015-10-16 | 2015-10-16 | Detector is let out in regulating valve valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105241611A true CN105241611A (en) | 2016-01-13 |
| CN105241611B CN105241611B (en) | 2017-08-04 |
Family
ID=55039335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510671488.5A Active CN105241611B (en) | 2015-10-16 | 2015-10-16 | Detector is let out in regulating valve valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN105241611B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806571A (en) * | 2016-05-20 | 2016-07-27 | 斯丹德汽车系统（苏州）有限公司 | Car-mounted fuel system leakage detecting module and detecting method thereof |
| CN105841896A (en) * | 2016-03-26 | 2016-08-10 | 宁波市宇华电器有限公司 | Device for testing sealing performance of steel plastic pipe |
| CN112709726A (en) * | 2021-01-06 | 2021-04-27 | 宋丙臣 | Hydraulic cylinder with exhaust function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0652569B1 (en) * | 1993-11-10 | 1998-02-04 | Westinghouse Electric Corporation | Leak detection system and method for detecting a leaking container |
| US6308528B2 (en) * | 1999-05-21 | 2001-10-30 | Bright Solutions, Inc. | Fluid delivery apparatus and method |
| CN1512168A (en) * | 2002-12-30 | 2004-07-14 | 西安重型机械研究所 | Steel pipe leakage detecting system for test pipe machine |
| CN202255788U (en) * | 2011-09-28 | 2012-05-30 | 北京索普液压机电有限公司 | Supercharging device used for high pressure rubber pipe test |
| CN204679233U (en) * | 2015-06-26 | 2015-09-30 | 宁波市宇华电器有限公司 | The bubble-tight device of a kind of detection joint for plastic tube |
-
2015
- 2015-10-16 CN CN201510671488.5A patent/CN105241611B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0652569B1 (en) * | 1993-11-10 | 1998-02-04 | Westinghouse Electric Corporation | Leak detection system and method for detecting a leaking container |
| US6308528B2 (en) * | 1999-05-21 | 2001-10-30 | Bright Solutions, Inc. | Fluid delivery apparatus and method |
| CN1512168A (en) * | 2002-12-30 | 2004-07-14 | 西安重型机械研究所 | Steel pipe leakage detecting system for test pipe machine |
| CN202255788U (en) * | 2011-09-28 | 2012-05-30 | 北京索普液压机电有限公司 | Supercharging device used for high pressure rubber pipe test |
| CN204679233U (en) * | 2015-06-26 | 2015-09-30 | 宁波市宇华电器有限公司 | The bubble-tight device of a kind of detection joint for plastic tube |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841896A (en) * | 2016-03-26 | 2016-08-10 | 宁波市宇华电器有限公司 | Device for testing sealing performance of steel plastic pipe |
| CN105806571A (en) * | 2016-05-20 | 2016-07-27 | 斯丹德汽车系统（苏州）有限公司 | Car-mounted fuel system leakage detecting module and detecting method thereof |
| CN105806571B (en) * | 2016-05-20 | 2019-03-08 | 斯丹德汽车系统（苏州）有限公司 | Vehicle-mounted fuel systems leak detection module and its detection method |
| CN112709726A (en) * | 2021-01-06 | 2021-04-27 | 宋丙臣 | Hydraulic cylinder with exhaust function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105241611B (en) | 2017-08-04 |
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